Buckle and heat dissipation module having the same

ABSTRACT

A heat dissipation module includes a fin stack, a fan and buckles. The fin stack includes fins arranged at interval and in parallel with each other, wherein a notch is formed at an edge of each fin and the notches of the fins are in alignment. The fan includes through holes. Each buckle includes an elastic connecting piece, a first cylinder and a second cylinder. An extension portion is formed at one end of the elastic connecting piece. A lateral side of the first cylinder connects the extension portion. The second cylinder vertically extends from the other end of the elastic connecting piece. The first cylinder is snapped on corresponding notches. The second cylinder is received in a corresponding through hole. Whereby, the first cylinder could be easily snapped on and removed from the notch.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a heat dissipation module, and inparticular to a heat dissipation module which is easy for installationand the buckle thereof.

2. Description of Prior Art

Heat dissipation modules are commonly used in electronic thermal field.Generally, a conventional heat dissipation module includes a fin stackand a fan. The fin stack includes fins connected to a heat-conductiveplate by a heat pipe. The heat-conductive plate contacts a heat source.For example, the heat source could be a CPU (central processing unit) ora GPU (graphics processing unit). Heat generated by the heat sourcespreads in the heat-conductive plate. The heat is transferred to thefins through the heat pipe, and further dissipated into atmosphere viaforced air convention.

Therefore, the fin stack has to be locked with the fan. Buckles arecommonly used for connection between the fin stack and the fan. Becausethe fan is firmly connected with the fin stack, it is usually difficultto remove buckles from the fin stack.

For example, the buckles mentioned in patents TW M300837 and TW M342542are difficult to be removed from the fin stack. Hence, the parts of aconventional heat dissipation module may be damaged by operators inproduction lines or consumers when assemble the heat dissipation module.

SUMMARY OF THE INVENTION

This invention provides a heat dissipation module and a buckle thereof,wherein the fan and the fin stack of the heat dissipation module couldbe easily assembled or disassembled.

The heat dissipation module includes a fin stack, a fan and a pluralityof buckles. The fin stack includes a plurality of fins arranged atinterval and in parallel with each other, wherein a notch is formed atan edge of each fin and notches of the fins are in alignment. The fanincludes a plurality of through holes. Each buckle includes an elasticconnecting piece, a first cylinder and a second cylinder. An extensionportion is formed at one end of the elastic connecting piece. A lateralside of the first cylinder connects the extension portion. The secondcylinder vertically extends from the other end of the elastic connectingpiece. The first cylinder is snapped on corresponding notches. Thesecond cylinder is received in a corresponding through hole. Whereby,the first cylinder could be easily assembled with the correspondingnotches and easily disassembled.

Furthermore, the first cylinder is formed with a plurality of flangesarranged at interval and in parallel with each other, and one fin isengaged between two adjacent flanges. An axis of the first cylinder andan axis of the second cylinder are perpendicular with each other. Theextension portion is bent with respect to the elastic connecting piece.The second cylinder has a tapered portion to plug on the correspondingthrough hole. The tapered portion is in a cone shape, a taper directionof the tapered portion is the same as an extending direction of thesecond cylinder. The fan includes a frame. The through holes are formedon the frame.

The fan is locked with the fin stack by the first cylinder. Moreover,the first cylinder could be easily removed from corresponding notchesvia pulling the extension portion. Whereby, the heat dissipation moduleand the buckle of the present invention amend the disadvantage of priortechnologies.

BRIEF DESCRIPTION OF DRAWING

FIG. 1 is a schematic view showing the preferred embodiment of thepresent invention;

FIG. 2 is an explosion diagram showing the preferred embodiment of thepresent invention;

FIG. 3 is a schematic view showing the fan and the buckles in thepreferred embodiment of the present invention;

FIG. 4 is a schematic view showing the buckle in the preferredembodiment of the present invention;

FIG. 5 is a schematic view showing the buckles in the preferredembodiment of the present invention in another viewpoint;

FIG. 6 is the section view of the heat dissipation module shown in FIG.1;

FIG. 7 is a schematic view showing the buckle which is bent in thepreferred embodiment of the present invention;

FIG. 8 is the partially enlarged view of the heat dissipation moduleshown in FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION

Please refer to FIG. 1 and FIG. 2. The first embodiment of the presentinvention provides a heat dissipation module including a fin stack 100,a fan 200 and a plurality of buckles 300. The buckles are used forfirmly locking the fan 200 on the fin stack 100.

Please refer to FIG. 2. The fin stack 100 preferably includes fins 110,heat pipes 120 and a heat-conductive plate 130. The fins 110 are made ofmetal with superior heat transfer efficiency. For example, the fins 110could be made of aluminum or copper. The fins 110 are arranged atinterval and in parallel with each other. In each fin 110, a notch 111is punched at the edge of each fin 110, and the notches 111 of the fins110 are arranged in alignment. In this embodiment, each fin 110 ispreferably punched six heat-conductive holes 112. The number of the heatpipes 120 corresponds with the number of the heat-conductive holes 112.The fin stack 100 preferably includes three U-shaped heat pipes 120,wherein each end of the heat pipe 120 is received in a corresponded heatconductive hole 112, whereby the heat pipes 120 connect the fins 110.The heat-conductive plate 130 connects the central segment of each heatpipe 120.

Please refer to FIG. 3. The fan 200 includes a frame 210 and a fan wheel220 which is set in the frame 210. The frame 210 is of arectangular-piece shape. Through holes 211 are provided on the frame210. In the present embodiment, four through holes 211 are provided atthe four corners of the frame 210.

Please refer to FIG. 3 to FIG. 5. In the present embodiment, the heatdissipation module of the present invention includes four buckles 300corresponding to each through hole 211. Each buckle 300 is integrallymolded by elastic material which is preferably silicon or rubber. Thebuckle 300 includes an elastic connecting piece 310, a first cylinder320 and a second cylinder 330. The elastic connecting piece 310 is of abar shape. An extension portion 311 is formed at one end of the elasticconnecting piece 310. A lateral side of the first cylinder 320 isconnected to the extension portion 311. A plurality of flanges 321 areparallel arranged on the lateral face of the first cylinder 320. Eachflange 321 surrounds the lateral side of the first cylinder 320. In thepresent embodiment, four flanges 321 are provided on each first cylinder320, but the number of the flange 321 on each first cylinder 320 is nota limitation of the present invention. The second cylinder 330 isperpendicularly extends from the other end of the elastic connectingpiece 310. In the present embodiment, the first cylinder 320 and thesecond cylinder 330 are provided on opposite lateral faces of theelastic connecting piece 310. Furthermore, the first cylinder 320 andthe second cylinder 330 are perpendicular with each other. The secondcylinder 330 has a conic tapered portion 331 to plug on thecorresponding through hole 211. A taper direction of the tapered portion331 is the same as an extending direction of the second cylinder 330. Inthe present embodiment, the tapered portion 331 has a tip 332 and ablunt end 333, and the outer diameter of the blunt end 333 is largerthan the inner diameter of the through hole 211.

Please refer to FIG. 6 to FIG. 8. The second cylinder 330 is received inthe through hole 211 of the fan 200. The tip 332 of the tapered portion331 is inserted into the corresponding through hole 211 in advance, andthen the blunt end 333 of the tapered portion 331 is elastically pressedby the inner wall of the through hole 211 to facilitate the entrance ofthe blunt end 333. After passing through the through hole 211, the bluntend 333 of the tapered portion 331 restores resiliently and sticks inthe through hole 211. Therefore, the buckle 300 is fixed on the fan 200.The elastic connecting piece 310 is bent with respect to the elasticconnecting piece to make the first cylinder 320 be snapped oncorresponding notches 111 at the edges of the fins 110. In the presentembodiment the first cylinder 310 is snapped on three aligned notches111. Each fin is engaged between two adjacent flanges 321, and the threefins 110 are engaged with four flanges 321.

In the present invention, the fin stack 100 and the fan 200 areconnected by buckles 300 which are made of elastic materials. Therefore,the buckles 300 would not damage the fins 110 while the fin group 100and the fan 200 are assembled or disassembled. Moreover, the fan 200could be easily set on the fin stack 100 by means of snapping the firstcylinder 320 into the notch 111 of the fin 110. While the first cylinder320 is pulled, the fins 110 could be protected by the flanges 321 toprevent from being damaged by the first cylinder 320. Furthermore, eachfirst cylinder 320 could be pulled out from the notches 111 by pullingthe extension portion 311. Accordingly, the fan 200 could be easilyremoved from the fin stack 100. Therefore, in the present invention, thefin stack 100 and the fan 200 could be firmly connected by the buckles300 and could be easily disassembled.

Although the present invention has been described with reference to theforegoing preferred embodiment, it will be understood that the inventionis not limited to the details thereof. Various equivalent variations andmodifications can still occur to those skilled in this art in view ofthe teachings of the present invention. Thus, all such variations andequivalent modifications are also embraced within the scope of theinvention as defined in the appended claims.

What is claimed is:
 1. A heat dissipation module, comprising: a finstack comprising a plurality of fins arranged at interval and inparallel with each other, wherein a notch is formed at an edge of eachfin and notches of the fins are in alignment; a fan comprising aplurality of through holes; and a plurality of buckles; wherein eachbuckle comprises an elastic connecting piece, a first cylinder and asecond cylinder, an extension portion is formed at one end of theelastic connecting piece, a lateral side of the first cylinder connectsthe extension portion, the second cylinder vertically extends from theother end of the elastic connecting piece, the first cylinder is snappedon corresponding notches, and the second cylinder is received in acorresponding through hole.
 2. The heat dissipation module according toclaim 1, wherein the first cylinder is formed with a plurality offlanges arranged at interval and in parallel with each other, and onefin is engaged between two adjacent flanges.
 3. The heat dissipationmodule according to claim 1, wherein an axis of the first cylinder andan axis of the second cylinder are perpendicular with each other.
 4. Theheat dissipation module according to claim 1, wherein the extensionportion is bent with respect to the elastic connecting piece.
 5. Theheat dissipation module according to claim 2, wherein the extensionportion is bent with respect to the elastic connecting piece.
 6. Theheat dissipation module according to claim 3, wherein the extensionportion is bent with respect to the elastic connecting piece.
 7. Theheat dissipation module according to claim 1, wherein the secondcylinder has a tapered portion to plug on the corresponding throughhole.
 8. The heat dissipation module according to claim 7, wherein thetapered portion is in a cone shape, a taper direction of the taperedportion is the same as an extending direction of the second cylinder. 9.The heat dissipation module according to claim 1, wherein the fancomprises a frame, and the through holes are formed on the frame.
 10. Abuckle comprising: an elastic connecting pieces having an extensionportion formed at one end; a first cylinder having a lateral sideconnecting the extension portion; and a second cylinder verticallyextending from the other end of the elastic connecting piece.
 11. Thebuckle according to claim 10, wherein the second cylinder has a taperedportion and a taper direction of the tapered portion is the same as anextending direction of the second cylinder.